nitric oxide drugs?

One medication path to lower BP is supposed to be the nitric oxide channel.  I've heard that the drug Viagra was originally developed as a BP drug, but it wasn't very good for that, so it's nice they found another benefit from it!  But, are there any other nitric oxide channel drugs that do work for BP?

There are nitric oxide foods, including beets and arugula, that may help, and you can search for more.  Vitamin C and arginine apparently help, too.  Thanks.

OMG, I meant nitric OXIDE not nitric acid!

We need a correction capability.